Q1. Comparison of fuel consumption (mpg) across transmission gears (3, 4, 5)

Interpretation:
- Cars with 4 gears show the highest median mpg, making them the most fuel-efficient choice for product development.
- Cars with 5 gears have more diverse fuel consumption (larger IQR), indicating higher variability.
- Cars with 3 gears are more consistent but have lower mpg overall (less efficient).

Recommendation:
Focus on developing 4-gear transmission models for efficiency, while also monitoring variability across car designs.

Q2. Fuel consumption of sport (vs=0) vs non-sport (vs=1) cars

Interpretation:
- Non-sport cars (vs=1) have higher median mpg, making them more fuel-efficient compared to sport cars (vs=0).
- Non-sport cars show a wider IQR, meaning fuel efficiency is more diverse across models.
- Sport cars are more consistent but consistently less fuel-efficient.

Recommendation:
For cost-efficient production, emphasize non-sport (straight-engine) models, as they offer better fuel economy.

Q3. Relationship between car weight and horsepower

Interpretation:
- A positive correlation exists: heavier cars tend to have higher horsepower.

Unique cases:
- A medium-weight sport car with exceptionally high horsepower (~335 hp). Likely a performance/muscle car.
- Very light cars with low horsepower → fuel-efficient economy cars.
- Extremely heavy cars with only moderate horsepower → inefficient designs.
- A possible outlier: very light non-sport car with relatively high horsepower → potentially unstable or unsafe.

Recommendation:
Engineering teams should balance weight and horsepower carefully. Avoid overly heavy cars with low horsepower and very light cars with high horsepower, as both present inefficiency or safety risks.